S.E.E.R. stands for Seasonal Energy ,Efficiency Ratio, the standard measurement of air conditioning efficiency established by the U.S. Department of Energy. What does this mean to you? Higher S.E.E.R. ratings translate into greater energy efficiency which means lower summer cooling bills. The most important thing to remember is the higher the S.E.E.R. rating, the more money you save. hy a higher efficiency rating (SEER) saves energy: If your current air conditioner or heat pump is more than 10 years old, it could be operating at lower than 8.00 S.E.E.R. Compare the estimated annual bill of an 8.00 S.E.E.R. system to that of a higher S.E.E.R., such as a 12.00 or 13.00. For instance, if the annual cooling bill of an 8.00 S.E.E.R. system in a particular area is $1,000, it would cost only $615 for a 13.00 S.E.E.R. system to operate at the same capacity in the same area. This is an annual savings of 38%.